I'll be putting a Rochester Monojet on the manifold of my 261. It has the 1/2 in. thick plastic heat insulator block to separate the carb from the manifold.

The carb rebuild kit came with 3 gaskets which range from thin cardboard to a 1/8" thick composite of some sort.

Are those 3 "gaskets" really heat insulators?

Should I use any of these with the 1/2" heat insulator block? These "gaskets" are not shown in the rebuild kit drawings. Thanks!!


1948 3/4-Ton 5-Window Flatbed Chevrolet

34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.